Oil-burning apparatus for steam-boilers



(No Model.) P. LEADBBATER.

OIL BURNING APPAEATUS FOR STEAM BOILERS.

No. 409,846. Patented Aug. 27, 1889.

N. PUERS. Fhnmumo u h UNITED STATES PATENT OFFICE.

FREDERICK LEADBEATER, OF DETROIT, MICHIGAN.

OIL-BURNING APPARATUS FOR STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 409346, dated August27, 1889.

Application filed October 20, 1888. Serial No. 288,708. (No model.)

To all whom it may conccrn:

Be it known that. I, FREDERICK LEADBEA'T- ER, acitizen of the UnitedStates, residing at Detroit, county of \Vayne,State of Michigan, haveinvented a certain new and useful Improvement in Oil Burning Apparatusfor SteaIn-Boilers; and I declare the following to be a full, clear, andexact description of the invention such as will enable others skilled inthe art to which it appertains to make and use the same, reference beinghad to the acconpanying drawings, which form a part of thisspecification.

In the drawings, Figure 1 is a longitudinal section and elevation of aboiler-fnrnace illustrating my invention. Fig. 2 represents a horizontalsection showing parts in plan. Fig. 3 is a plan View of one of thedifliusing-plates, with longitudinal and transverse sections of thesame. Figs. 4: and 5 are detail views.

It is the purpose of my invention to produce an efcient and inexpensiveappliance, whereby crude petroleum maybe burned within a steam-boilerfurnace; and to this end my invention consists in an oil-burnin gapparatus comprising a series of oil-diffusing plates arranged atdifferent levels, one in advance of another, and each inclined slightlydownward at its -forward end, where it overlaps the next succeedinglower plate a longitudinally-perforated oil-discharge pipe being locatedtrans- Versely above the upper diffusing-plate and in communication withan oil-supply pipe, into which leads a steam-injecting pipe thatdischarges in the direction of the flow of the oil, so as to prevent anyreflux of gas toward the oil-tank.

In carrying outny invention, A represents a steanfiboiler.

A' is the boi1er-front.

B i`s the grate.

A is the fuel-door.

C is the brdge-wallnvhich may or may not be employed.

D D' D &(3., represent a series of plates, which I termdifiusing-plates.

E is the oil-supply pipe, which leads from a tank E'. The oil-pipo isterminated with a cross-pipe E'-, which is perforated at shortintervalswith small orifices for the outflow of the oil onto the top plate D.

e is a suitable valve for regulating the feeding of oil to the furnace.

The general operation of this part of the invention will now beunderstood. Oil (lischarging from the small orifices onto the top plateD is there ignited, and fiows forward over the plate, which is slightlyinclined toward the front. As it fiows forward, it drips down onto thenext plate D', and from thence to each suoceeding plate D &0. The spaces(Z between the plates afford free ingress for the air, which entersthrough the feed-door, and so an abundant supply of oxygen is providedto effect a thorough and complete conibustion of the oil. As the furnacewarms up, the plates D D' D dac., become very highly heated, and, inconnection with the oxygen, quickly convert all carbonaceous matter intoa gaseous and infiammable state, the whole being thoroughly consumedwithout the formation of smoke.

CZ( represents any suitable lever mechanism connected at one end to thecorresponding diffusing-plate, and at the other end to asuitable handlewhich projects to the eXterior of the furnace. These plates D D' D &(3.,are hinged or pivoted, so that by drawing upon the handle (1 the platesmay be so tilted as to widen or contract the air-throats d between them.This of course may be accomplished by pivoting all the plates; or itmight be accomplished by pivoting every alternate plate at its middlepoint, as indicated by the plate D', shown in the separate View at theright of Fig. 1, for by tilting this one plate it is m anifest thatitwould contract the air-throats d both above and below it.

1 3 is a small steam-pipe, which leads from the steam-space of theboiler down to and terninates within the oil-supply pipe. I either plugup or weld thelower end of this pipe and provide an orifice e', openingtheret'rom, so as to throw a jet of stean in the direction of the flowof the oil. This serves to prevent the possibility ot a back surge ofgas or vapor through the pipe to the tank.

The plates D D' D &(3., may be faced on their upper sides withfire-clay, or with firebrick or tiling. This is shown at lF in Fig. 3,and in order to prevent this fire clay, brick, or tiling from workingoft' from the plates by ICO the effects of expansion and contraction Iprefer to form the plates With recesses f. These reeesses may extendin adirection longitudinally of the plate, or they may eXtend bothlongitudinally and transversely of the plate; or instead of the recessesthere may be ribs or fianges formed upon the plate for a like purpose,the object being to permit the fire clay, brick, or tiling to set intothe said recesses, and so be held against displacement When in use.

Of course the plate may be cast froni iron or other refractory materialwhich may stand' the heat Without the necessity of any lining, as above.I Would therefore have it understood that I purpose to employ the saidplates either With or Without the said lining.

Of course, instead of fire-clay, any highlyrefractory substance may beemployed-as, for instance, a compound having asbestus as its base, ormineral wool, plumbago, or other refractory substance.

Air may enter through the fuel-door alone, or through the ash-pit dooralone, or through one in advance of another and each inclined slightlydownward at its forward end, which overlaps the next suceeeding lowerplate, of a transverse longitudnally-perforated discharge-pipe locatedabove the upper diffusing-plate, an oil-supply pipe conmunicating` .Withsaid discharge-pipe, and a steam-injecting pipe leading into theoil-supply pipe, substantially as described.

In testimony Whereof I sign this specification in the presence of twowitnesses.

FREDERICK LEADBEATER.

Witnesses:

M. B. OD0GHERTY, SAMUEL E. THoMAs.

